That was for the OpenAI games- including the ones that won. For the ones he ran himself with open source LLM's he restricted their grammar to just be legal move

That was for the OpenAI games- including the ones that won. For the ones he ran himself with open source LLM's he restricted their grammar to just be legal moves, so it could only respond with a legal move. But that was because of a separate process he added on top of the LLM. Again, this isn't exactly HAL playing chess.